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Erwan Normand
2024-06-27 17:52:03 +02:00
parent eb80ce3e38
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2-perception/xr-perception/6-discussion.tex
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@@ -10,7 +10,7 @@ The results showed a difference in vibrotactile roughness perception between the
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Given the estimated point of subjective equality (PSE), the textures in the \level{Real} rendering were on average perceived as \enquote{rougher} than in the \level{Virtual} (\percent{-2.8}) and \level{Mixed} (\percent{-6.0}) renderings (see \figref{results/trial_pses}).
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\citeauthorcite{gaffary2017ar} found a PSE difference in the same range between AR and VR for perceived stiffness, with the VR perceived as \enquote{stiffer} and the AR as \enquote{softer}.
\textcite{gaffary2017ar} found a PSE difference in the same range between AR and VR for perceived stiffness, with the VR perceived as \enquote{stiffer} and the AR as \enquote{softer}.
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%However, the difference between the \level{Virtual} and \level{Mixed} conditions was not significant.
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@@ -48,7 +48,7 @@ Conversely, when interacting with a real texture, there is no lag between any of
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Thereby, we hypothesise that the differences in the perception of vibrotactile roughness are less due to the visual rendering of the hand or environment and their associated difference in exploration behaviour, but rather to the difference in the perceived latency between one's own hand (visually and proprioceptively) and the virtual hand (visually and haptically).
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\citeauthorcite{diluca2011effects} demonstrated, in a VST-AR setup, how visual latency relative to proprioception increased the perception of stiffness of a virtual piston, while haptic latency decreased it.
\textcite{diluca2011effects} demonstrated, in a VST-AR setup, how visual latency relative to proprioception increased the perception of stiffness of a virtual piston, while haptic latency decreased it.
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Another complementary explanation could be a pseudo-haptic effect of the displacement of the virtual hand, as already observed with this vibrotactile texture rendering, but seen on a screen in a non-immersive context~\autocite{ujitoko2019modulating}.
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